MOSCOW, May 27. /ITAR-TASS/. Russia's Border Service has denied the report alleging that an armed group has driven into the Ukrainian territory from Russia.

"The Border Service department for the Rostov Region does not confirm the fact of illegal crossing of the Russian-Ukrainian border," the department told ITAR-TASS.

The report alleging illegal border crossing was distributed by Russian and Ukrainian media citing Ukraine's State Border Service earlier on Tuesday.